Two Bryan lines shown by DNA testing not to descend from Morgan Bryan

At http://vagenweb.org/scott/HSpubl57.htmlhttp://vagenweb.org/scott/HSpubl57.html appears the following: HISTORICAL SKETCHES OF SOUTHWEST VIRGINIA , PUBLICATION 10 - 1976,THE BOREN FAMILY OF SOUTHWEST VIRGINIA By Kerry Ross Boren Morgan Bryan was the uncle of Rebecca Bryan, wife of Daniel Boone. Born in 1729 in Chester County, Pennsylvania, Morgan Bryan, married Mary Forbes in Virginia in 1747. Their children were: James Bryan born circa 1749, died previous October 14, 1796; Morgan Bryan, III, born 1750, married 1781 Maxemilly Simpson, died 1815; Joseph Bryan, born 1751, married Easther Hampton 1772, died 1830; Rebecca Bryan born circa 1754, married Mr. Morgan; Mary Bryan, born circa 1756, married Samuel McMahan, died 1829; George Bryan, born February 15, 1758, married (1) Elizabeth Neal Rodgers 1780 (at Bryan's Station, Kentucky) and (2) Mrs. Cassandra Miller; John Bryan born circa 1762 (nothing known of him); Susannah Bryan born circa 1760, Forks of the Yadkin River, North Carolina, married circa 1777, Bazel Boren. At least one individual at Ysearch.org (2BXD5) has claimed that his Bryan line goes back to "Denmark," a code word for "Morgan Bryan," and his ysearch markers (first 24) are an exact match for D642J, who claims descent from Josiah Bryant.At familytreedna.com, two individuals who are an exact match with 2BXD5 and D642J up to 24 markers are nos. 57501 and 52082.They in turn are exact matches for the first 24 markers with 134537, who claims descent from Elisha Bryant, 1831, Mt. Sterling [Madison Co.], KY;and 101044 and 122853, who each claim descent from John Bryan [who married Chloe Bowmar in 1798 in Woodford Co.].On the internet some of the descendants of John Bryan claim that his parents were the Morgan Bryan, Jr., and Mary Forbes described above.However they believe that their ancestor was born about 1776, almost ageneration later than the John Bryan who was born to Morgan and Mary, above.Number 180298 at FTDNA says his earliest known ancestor is Thomas Jefferson Bryant, b. about 1826-27 in Georgia, and no. 27143 says his earliest ancestor is Benjamin B. Bryan, b. about 1833 in Kentucky.So far the effort to link Thomas Jefferson Bryant to any forebears has not progressed very far.See http://boards.ancestry.com/surnames.bryant/3481.1.2/mb.ashxhttp://boards.ancestry.com/surnames.bryant/3481.1.2/mb.ashx Benjamin B. Bryan b. ca. 1833 has also not been definitely linked to other Bryans, although the name "Benjamin B. Bryan" occurs in several other lineages.See, e.g.,http://records.ancestry.com/Benjamin_B_Bryan_records.ashx?pid=164300417http://records.ancestry.com/Benjamin_B_Bryan_records.ashx?pid=164300417 [Needham Bryan] and http://familytreemaker.genealogy.com/users/b/r/y/Carole-J-Bryan-CA/WEBSITE-0001/UHP-0229.htmlhttp://familytreemaker.genealogy.com/users/b/r/y/Carole-J-Bryan-CA/WEBSITE-0001/UHP-0229.html.And there are others. Some of the participants in the FTDNA Bryan surname project have not identified their earliest known ancestor.Those in that category who match the foregoing group [13 24 14 11 11-14 12 12 11 13 13 29 17 8 9 11 11 25 15 19 29 13 13 15] are 141655, 115293, 98444, 94700, and 78034, so their matches shed no light on a prospective solution.The point is, linkages cannot be made relying solely on similarity names and geographic proximity, especially with common surnames like Bryan.There needs to be additional contextual evidence of some kind, not to mention some kind of documentation, before making the leap of faith.The large number of Bryan lines who claim descent from Morgan Bryan because of "DNA testing," or other reasons are not likely all to be correct.I am not sure that anyone has yet identified the "correct" DNA line of descent from Morgan Bryan.I have not seen even a preliminary effort to examine competing claims by grouping claimants who in fact have the same genetic lineage.It would help if more people who get the tests would share their genealogical work to facilitate the identification of the correct relationships.Otherwise the "brick walls" are likely to stay where they are for a long time to come. Contrast this with a different example.On FTDNA there is a small grouping where one of the participants claims descent from "Sir Francis Bryan, b. 1630 d. 1694."No. 227323.At 24 markers it is very similar to 125666, which claims descent from Richard Bryan, b. 1690 died 1748 K. Geo. C., Va.The only difference is at DYS 464b.61987, descended from David Anderson Bryan is the same as 227323.At ysearch.org the owner of YVXUD says the following: The emigration was by a son of Edward [Bryant] who was born in 1590 in Denbigh, Denbighshire, Wales, and who died 1 Jun 1660 in Elizabeth City, Virginia; he married Ann Butler of Herfordshire, England. We have solid pedigree information to William Bryan b. 1762-1823 who married Ann Hundley in Amelia County, VA and moved to Washington County Kentucky in the mid-1790s. Ross Bryan YDNA test [same as C76AH] shows William's earlier ancestry is to a family whose pedigree includes Richard Bryant the Immigrant, son of the younger Edward who immigrated. It is unclear whether the common ancestor was in Virginia or in Britain. YDNA test showed our branch not descended from Thomas Bryan son of Immigrant Morgan/Martha Strode nor from possible brother of Morgan, Immigrant William Bryan. (emphasis added) 9DXZB, claiming descent from James William Bryan (1844-1915) is the same as C76AH.Sir Francis Bryan was from Dorset, and did have children by his first wife (but not by his second wife, the countess of Ormond, from whom many falsely claim descent through Morgan Bryan), but it is a big leap from what is known or at least probable to the conclusion that this group are descendants of Sir Francis Bryan.